server/controllers/activitypub/inbox.ts

   1 import * as express from 'express'
   2 import { Activity, ActivityPubCollection, ActivityPubOrderedCollection, RootActivity } from '../../../shared'
   3 import { logger } from '../../helpers'
   4 import { isActivityValid } from '../../helpers/custom-validators/activitypub/activity'
   5 import { processActivities } from '../../lib/activitypub/process/process'
   6 import { asyncMiddleware, checkSignature, localAccountValidator, signatureValidator } from '../../middlewares'
   7 import { activityPubValidator } from '../../middlewares/validators/activitypub/activity'
   8 import { ActorModel } from '../../models/activitypub/actor'
   9
  10 const inboxRouter = express.Router()
  11
  12 inboxRouter.post('/inbox',
  13   signatureValidator,
  14   asyncMiddleware(checkSignature),
  15   activityPubValidator,
  16   asyncMiddleware(inboxController)
  17 )
  18
  19 inboxRouter.post('/account/:name/inbox',
  20   signatureValidator,
  21   asyncMiddleware(checkSignature),
  22   localAccountValidator,
  23   activityPubValidator,
  24   asyncMiddleware(inboxController)
  25 )
  26
  27 // ---------------------------------------------------------------------------
  28
  29 export {
  30   inboxRouter
  31 }
  32
  33 // ---------------------------------------------------------------------------
  34
  35 async function inboxController (req: express.Request, res: express.Response, next: express.NextFunction) {
  36   const rootActivity: RootActivity = req.body
  37   let activities: Activity[] = []
  38
  39   if ([ 'Collection', 'CollectionPage' ].indexOf(rootActivity.type) !== -1) {
  40     activities = (rootActivity as ActivityPubCollection).items
  41   } else if ([ 'OrderedCollection', 'OrderedCollectionPage' ].indexOf(rootActivity.type) !== -1) {
  42     activities = (rootActivity as ActivityPubOrderedCollection<Activity>).orderedItems
  43   } else {
  44     activities = [ rootActivity as Activity ]
  45   }
  46
  47   // Only keep activities we are able to process
  48   logger.debug('Filtering %d activities...', activities.length)
  49   activities = activities.filter(a => isActivityValid(a))
  50   logger.debug('We keep %d activities.', activities.length, { activities })
  51
  52   let specificActor: ActorModel = undefined
  53   if (res.locals.account) {
  54     specificActor = res.locals.account
  55   } else if (res.locals.videoChannel) {
  56     specificActor = res.locals.videoChannel
  57   }
  58
  59   await processActivities(activities, res.locals.signature.actor, specificActor)
  60
  61   res.status(204).end()
  62 }